Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoi mat cua snippets" » "hoi dat cua snippets", "hoi bat cua snippets", "hoi hat cua snippets", "hoi ma cua snippets", "hoi manh cua snippets", "hoi mang cua snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("hoi mat cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoi mat cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoi mat cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoi mat cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.